package com.imooc.netty;

import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpServerCodec;

/*
初始化器,chnnel注册后,会执行里面的对应的初始化方法
 */
public class HelloServerInitializer extends ChannelInitializer<SocketChannel> {
    @Override
    protected void initChannel(SocketChannel channel) throws Exception {
        //通过SocketChnnel去获得对应的管道
      ChannelPipeline pipeline= channel.pipeline();
    //通过管道,添加handler
        //HttpServerCodec是由netty自己提供的助手类,可以理解为拦截器
        //当请求到服务端,我们需要做解码,响应到客户端做编码
      pipeline.addLast("HttpServerCodec",new HttpServerCodec());
//添加自定义的助手类,返回"hello netty~"
      pipeline.addLast("customHandler",new CustomHandler());

    }
}
